Examine source code of Tawqieiun

{
  "manifest_version": 2,
  "name": "Tawqieiun",
  "version": "1.2.0.1",
  "description": "Complete solution for the development of web applications that require digital certification technology",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "96": "icons/96.png",
    "128": "icons/128.png"
  },
  "background": {
    "scripts": [
      "js/event-script.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "js/content-script.js"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "permissions": [
    "nativeMessaging"
  ]
}